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      Permanent link:
      https://www.ias.ac.in/article/fulltext/seca/028/04/0189-0197

    • Keywords

       

      Baicalein; Chrysin; Wogonin; Aqueous Sodium Hydroxide; Root Bark

    • Abstract

       

      The experiments described in this paper show that a pure sample of oroxylin-A melts at 219–20° (acetate, 139–40°), that the substance melting at 231–32° is a mixture of it with chrysin and that this mixture could be separated by fractionation of the acetates. The constitution of oroxylin-A as the 6-methyl ether of baicalein is confirmed by ethylating it to the diethyl ether and showing that the product is identical with a synthetic sample of 6-methoxy-5 ∶ 7-diethoxy flavone. The details of the synthesis are given.

    • Author Affiliations

       

      L Ramachandra Row1 V D Nageswara Sastry1 T R Seshadri1 T R Thiruvengadam1

      1. Department of Chemistry, Andhra University, Waltair
    • Dates

       
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